Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

Re: Small examples of string eval

by aufflick (Deacon)
on May 15, 2006 at 07:08 UTC ( #549388=note: print w/ replies, xml ) Need Help??


in reply to Small examples of string eval

Along the lines of other commenters, if your goal is to enlighten non-agile developers about the beauty of a flexible language and run-time environment like perl, eval EXPR is not the thing to do it with (IMHO).

eval EXPR is what I use in php or Sybase stored procedures, to make up for the lack of expressiveness in the language.

While eval EPXR has definite uses (such as the quoted example of dynamically loading packages), probably 90% of the times that eval EXPR is used in Perl code, faster and more safe code could be written to do the same thing using techniques such as those shown in other responses (such as closures/currying etc.).

In fact, if these developers are serious C or Java developers and talk about things like compiler optimisations then they are going to recognise most eval EXPR based Perl code as a weak solution to hard problems. It would be sad for that to be their first Perl experience as Perl offers such better solutions to those problems than does, say, C or Java.


Comment on Re: Small examples of string eval

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://549388]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others lurking in the Monastery: (8)
As of 2014-09-20 08:34 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    How do you remember the number of days in each month?











    Results (157 votes), past polls